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Citation for Study 89

About Citation title: "A systematic revision of Fuchsia sect. Quelusia (Onagraceae).".
About This study was previously identified under the legacy study ID S11x4x95c20c53c01 (Status: Published).

Citation

Berry P. 1989. A systematic revision of Fuchsia sect. Quelusia (Onagraceae). Annals of the Missouri Botanical Garden, 76: 532-584.

Authors

  • Berry P.

Abstract

Fuchsia sect. Quelusia consists of nine closely related species, eight from southeastern Brazil and one from southern Chile and Argentina. This treatment recognizes F. alpestris and F. glazioviana as separate from F. regia and describes two new species from southern Brazil, F. brevilobis and F. hatschbachii. The section is defined by its shrubby-lianoid habit, opposite-whorled leaves, and distinctive floral pattern associated with hummingbird pollination. It is one of only two entirely polyploid sections in the genus. Unique characters of the section include the large, violet, convolute petals, strongly exserted stamens, and partially connate sepals that are longer than the floral tubes. All nine species occupy cool forest habitats that are remnants of the widespread Tertiary temperate forests of the Southern Hemisphere. With the Old World sect. Skinnera as the sister group of all the American species of Fuchsia, sect. Quelusia represents an early offshoot of the ancestral South American fuchsias, distinct from the tropical Andean and Central American sections in its polyploidy and derived, 3-porate pollen. The nearest relative and sister species of sect. Quelusia is F. lycioides, a specialized xerophyte and the sole member of sect. Kierschlegeria, which occurs in central Chile just north of the range of F. magellanica. The Andean and Brazilian populations of sect. Quelusia probably became isolated in the late Tertiary, when the austral temperate forests were broken up by increasing aridity to the east of the Andes, as these were strongly uplifted. While F. magellanica has not differentiated substantially throughout its range in the southern Andes, sect. Quelusia has radiated extensively in the subtropical mountains of southern Brazil, where five of the eight species are restricted to high, isolated mountain peaks. Fuchsia regia, on the other hand, is widespread at lower altitudes throughout the planalto and coastal mountains of southeastern Brazil; it is differentiated into three mostly allopatric but intergrading series of populations which are treated here as subspecies. Two of these subspecies are newly described, F. regia subsp. reitzii and F. regia subsp. serrae. Fuchsia regia is the only species now found to occur sympatrically with other members of the section, and it forms natural hybrids with at least five different species. The only naturally occurring octoploid populations in the genus occur in F. regia and appear to be recently derived.

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S89
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